package com.zzw.hj12;

import java.util.Scanner;

/**
 * @Project: hw_java
 * @Description: 字符串反转
 * @Author: zzw
 */

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        StringBuilder sb = new StringBuilder(in.nextLine());
        System.out.print(sb.reverse());
    }
}